Improvement in refrigerators



J. F. FERGUSON.

REFRIGERATOR.

N0.181-.,3Z6. 4 Patented Aug.22,1875.

ILFEYERS, PHOYO-LITHOGRAFHER, WASHKNGTON. D. C.

NITED STATES PAU-EWS JAMES F. FERGUSON, OF ESSEX, VERMONT.

IMPROVEMENT IN REFRIGERATORS.

Specication forming part of Letters Patent No. 181,326, dated August 22,1876; application filed May 23, 1876.

To all 'whom t may concern:

Be it known that I, JAMES F. FERGUSON, of Essex, in the county of Chittenden and State of Vermont, have invented a new and useful Improvement in the Method of Keeping Milk, Cream, and Butter at any desired `temperature at all seasons of the year.

My invention consists in the construction and arrangement of what may be called an insulated milk-bureau,77 of which the following is a description, reference being had to the accompanying drawings and letters thereon, which form a part of this specication.

In the upper part of this bureau is placed a pan or reservoir for ice, and in the lower part one for hot water, for the purpose of cooling or heating the temperature of the interior of the bureau to any desired degree.

If preferred, hot free-stones or any other suitable heating apparatus may be used instead of hot water.

The contents ofthe bureau are protected from dust, insects, or dirt by doors in front, which may be 'hun g so as to expose the whole interior at once, when a single door only is required; or, if greater protection is desired, one side of the bureau, or even each shelf, may be provided with separate doors. An ample supply of pure air is obtained through ventilators in its top and'bottom.

The interior of the bureau is lighted through glazed openings, either in the sides or the doors, or both, according to the amount of light deemed necessary. On the inside of one of these a thermometer may beplaced, so that the interior temperature may be conveniently observed without opening the doors.

The bureau stands upon casters, so that itis portable, and therefore readily moved to the most convenient location. In the construction or arrangement of these casters,

' glass, gutta-percha, porcelain, or any other contents from souring or being otherwise unfavorably affected by the electricity in the atmosphere, especially during the prevalence of storms.

In the drawings, Figure l represents a vertical section of the bureau, containing any speciiied number of divisions. Fig; 2 is a perspective view of the frame resting upon the sliding supports, and upon which the pans are rolled, so that their contents may be more conveniently reached.

A is the bureau, on the inside of the sides of which cleats are arranged, upon which the ice pan or reservoir B above, and the milk pans D below, are intended to rest. d d' convenience in cleaning. They are provided with casters, so that they may be more easily moved.

In the lower division of the bureau is placed the heating apparatus. When not otherwise required, this division can be appropriated to jars of cream or butter.

By filling the reservoir B with ice and closing the doors yof the bureau, the temperature of its contents is soonreduced by the continuous current of air, which, having become chilled in its contact with the ice, descends, and thus establishes a circulation throughout the interior. rlhe extent as well as the purity of this current of air is regulated by the ventilators a a.

When it is desired to raise the tempera?- ture of the interior, a similar circulation is 2 lSl,326

produced with hot air` generated by heated free-stones, hot Water, or otherwise, in the division C, at the bottom of the bureau.

What I claim, and desire to secure oy-Let-A` ters Patent,.is-

1. A milk-safe, A, provided `with an npper cooling-reservoir, B, a lower heating-reservoir, C, and the intermediate milk-pans D,

resting upon suitable cleats d, arranged as described, and for the purpose set forth.

2. In the milk-cas A, provided 'with up-l per cooling and lower `heating-reservoirs, the

pans D, arranged above each other, and

`adapted to be drawn out upon suitable sliding frames E, all arranged as and for the pur- 

